50 citations · 142 across the 6 of their papers we have counts for
6 papers
Gate-controlled photo-oxidation of graphene for electronic structure modification
Ryo Nouchi, Morihiro Matsumoto, Nobuhiko Mitoma
Graphene is an ultrathin material, which allows us to control surface phenomena by means of field-effect gating. Among various surface phenomena, photo-oxidation is known to be a f…
Suppression of excess oxygen for environmentally stable amorphous In-Si-O thin-film transistors
Shinya Aikawa, Nobuhiko Mitoma, Takio Kizu +2
We discuss the environmental instability of amorphous indium oxide (InOx)-based thin-film transistors (TFTs) in terms of the excess oxygen in the semiconductor films. A comparison…
Gate-controlled ultraviolet photo-etching of graphene edges
Nobuhiko Mitoma, Ryo Nouchi
The chemical reactivity of graphene under ultraviolet (UV) light irradiation is investigated under positive and negative gate electric fields. Graphene edges are selectively etched…
Photo-oxidation of Graphene in the Presence of Water
Nobuhiko Mitoma, Ryo Nouchi, Katsumi Tanigaki
Oxygen molecules are found to exhibit non-negligible reactivity with graphene under strong light irradiation in the presence of water. The reaction is triggered by the laser Raman…
Coexistence of Dirac-Cone States and Superconductivity in Iron Pnictide Ba(FeRuAs)
Y. Tanabe, K. K. Huynh, S. Heguri +6
The Ru doping effect on the Dirac cone states is investigated in iron pnictide superconductors Ba(FeRuAs) using the transverse magnetoresistance (MR) measurements a…
Robustness of Spin Polarization in Graphene-based Spin Valves
Masashi Shiraishi, Megumi Ohishi, Ryo Nouchi +3
Decrease of spin polarization in spintronics devices under an application of bias voltage is one of currently important problems which should be solved. We reveal unprecedented rob…